Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.File;

import android.util.Log;

public class Main {
    private final static int MAX_BACKUP_FILES = 5;

    public static void moveCorruptedFileToBackup(File f) {
        if (!f.exists())
            return;
        Log.e("cr3", "Moving corrupted file " + f + " to backup.");
        File backup = getBackupFileName(f, false);
        f.renameTo(backup);
    }

    private static File getBackupFileName(File f, boolean isGoodBackup) {
        File f2 = null;
        String prefix = f.getAbsolutePath() + (isGoodBackup ? ".good.bak." : ".corrupted.bak.");
        for (int i = MAX_BACKUP_FILES - 1; i > 2; i--) {
            File to = new File(prefix + i);
            File from = new File(prefix + (i - 1));
            if (to.exists())
                to.delete();
            if (from.exists()) {
                if (!from.renameTo(to))
                    Log.e("cr3", "Cannot rename DB file " + from + " to " + to);
            }
        }
        f2 = new File(prefix + 2);
        if (f2.exists())
            if (!f2.delete())
                Log.e("cr3", "Cannot remove DB file " + f2);
        return f2;
    }
}